1550nm Ultra Low Ratio Tap Coupler (GK-LTC Series)

The Ultra Low Ratio Tap Coupler is a specialized fiber optic component designed to split off a minute fraction of an optical signal to a tap port while the majority of the signal continues on its original path. This type of coupler is particularly useful for applications where a small sample of a high-power optical signal is needed for monitoring or control purposes without affecting the main signal. Here's a summary of its key features and applications:

Ultra Low Tap Ratios: The coupler is capable of providing extremely low tap ratios, such as 0.1%, 0.01%, or even 0.001%. This means that only a very small portion of the input signal is diverted to the tap port, which is beneficial for monitoring purposes where a large signal could damage the monitoring equipment.

Protection for Monitoring Photodetectors: By splitting off such a small fraction of the light, the coupler ensures that the monitoring photodetector can operate without damage or saturation. This is crucial for maintaining the integrity of the monitoring system, especially when dealing with high optical power levels.

Suitable for High Optical Power: The coupler is designed to handle very high optical power, making it suitable for use with high-power optical sources such as fiber lasers. This allows for the safe monitoring of these sources without the risk of damage to the monitoring equipment.

Main Application: The primary application of the Ultra Low Ratio Tap Coupler is in the monitoring of optical sources like fiber lasers. It enables the continuous monitoring of the source's output power, providing valuable feedback for system control and stability.